"I couldn't think of a better place to make my acting debut than on one of the UK's most iconic shows!"

Meanwhile, lead writer Steven Moffat said: "We are completely thrilled that the amazingly talented Foxes is joining us on board... well, you'll see. Let's just say, the Doctor is finally catching up on his phone calls."

Doctor Who's eighth series - Peter Capaldi's first as The Doctor - will air on BBC One in August.